Trolley.



No. 770,744. PATENTED SEPT. 27, 1904. s. FISHER & A. SANDERS.

TROLLEY.

APPLIOATION FILED JUNE 27. 1903.

NO MODEL.

UNITED STATES Patented September 27, 1904.

PATENT OFFICE.

TROLLEY.

SPECIFICATION forming part of Letters Patent No. 770,744, datedSeptember 27, 1904. Application'filed June 2'7, 1903. Serial No.163.393. (No model.)

To all whom it may concern:

Be it known that we, SAMUEL FISHER and ALBERT SANDERS, citizens of theUnited- States, residing at Butler, in the county of Butler and State ofPennsylvania, have invented a new and useful Improvement in Trolleys, ofwhich improvement the following is a specification. I

This invention relates to certain new and useful improvements introlleys, the object of the invention being to provide means fornormally maintaining the trolley-wheel in engagement with thetrolley-wire and preventing the accidental disengagement thereof.

Briefly described, the invention comprises, in connection with thetrolley-harp and trolley-wheel, the extending of the shaft upon whichthe trolley-wheel is mounted at each end beyond the sides of the harpand the mounting on the extended ends of the shaft of a pair of arms,which at their upper ends carry horizontally disposed bevel wheelsadapted to act as guards to maintain the trolley-wheel in engagementwith the trolleywire. The arms, which are mounted on the extending endsof the trolley-shaft, have a spring interposed between the same at thelower ends and have these lower ends connected by links to anoperating-cord, whereby the lower ends of the arms may be drawn togetherin order to spread the upper ends thereof and permit the engagement withor disengagement of the trolley-wheel from the wire.

In describing the invention in detail reference is had to theaccompanying drawings, forming a part of this specification, and whereinlike numerals of reference indicate like parts throughout both views, inwhich Figure 1 is a detail side elevation of our improved trolley. Fig.2 is a front view of the same.

In the accompanying drawings, 1 indicates the trolley-harp, mounted onor suitably secured to the upper end of the trolley-pole 2. Thetrolley-wheel 3 is mounted on a shaft 4, and this shaft is extended atboth ends beyond the sides of the harp and has mounted on these extendedends the vertically-disposed arms 5, the upper ends of which are atright angles, and on these angularly-extending portions 6 are pivotallysecured the pivotal guardwheels 7. The portions of the arms 5 which arebelow the shaft 4 diverge outwardly and are held normally spread bymeans of an interposed spring 8, suitably connected to the arms neartheir lower ends. Pivotally connected to the lower ends of the arms is apair of links 9, which are attached to a common cord or rope 10, wherebythe arms 5 will both be operated in unison. A convenient method ofmanufacture is to simply twist the lower ends of the arms 5 whereby toform a fiat surface for the pivoting of the upper ends of the links 9thereto. When a pull is made on the rope or cord 10, it will be evidentthat the lower ends of arms 5 are drawn together, compressing spring 8and spreading the upper ends of arms 5, whereby to move wheels 7 awayfrom each other and permit the engagement with or disengagement of thetrolleywheel from the trolley or current wire 11. Thekeys 12 or othersuitable means may be employed in theshaft L for securing the arms 5 inposition thereon. During the travel of the trolley-wheel as the wheels 7engage a switch or crossover it will be observed that they will readilyspread, so as to permit the passage of the same. When they are in thenormal position, as shown in the drawings, the trolley-wheel will beprevented from being disengaged from the wire, as will be apparent.

It will be noted that various changes may be made in the details ofconstruction without departing from the general spirit of our invention.

Having fully described our invention, what we claim as new, and desireto secure by Letters Patent, is

In a trolley, the combination with a harp supporting a wheel upon ashaft having projecting ends, and a pole supporting the harp, of a pairof arms loosely secured on the projecting ends of the shaft for rockingmovement thereon, pins projecting through .the ends of said shaft, andbeing spaced from said arms, guard-wheels mounted on the upper ends ofthe arms and projecting toward each other directly above the wheel,links pivoted to the lower ends of the arms and having their lower endsoverlapping, a flexible means passsigned our names in the presence oftwo subing through the overlapping" ends of sald links scribingwitnesses. whereby the lower ends of the arms may be drawn together toseparate the guard-wheels, SAMUEL FISHER 5 and a spring arranged betweenthe lower ends I ALBERT SANDERb' of the arms for returning them to theirnor- [n presence of mal position, substantially as described. H. J.LEVIS,

In testimony whereof we have hereunto F. O. HENZI.

